diff options
Diffstat (limited to 'drivers/input/joystick/turbografx.c')
| -rw-r--r-- | drivers/input/joystick/turbografx.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/input/joystick/turbografx.c b/drivers/input/joystick/turbografx.c new file mode 100644 index 0000000..dd88b9c --- /dev/null +++ b/drivers/input/joystick/turbografx.c @@ -0,0 +1,258 @@ +/* + * $Id: turbografx.c,v 1.14 2002/01/22 20:30:39 vojtech Exp $ + * + * Copyright (c) 1998-2001 Vojtech Pavlik + * + * Based on the work of: + * Steffen Schwenke + */ + +/* + * TurboGraFX parallel port interface driver for Linux. + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: + * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic + */ + +#include <linux/kernel.h> +#include <linux/parport.h> +#include <linux/input.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("TurboGraFX parallel port interface driver"); +MODULE_LICENSE("GPL"); + +static int tgfx[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 }; +static int tgfx_nargs __initdata = 0; +module_param_array_named(map, tgfx, int, &tgfx_nargs, 0); +MODULE_PARM_DESC(map, "Describes first set of devices (<parport#>,<js1>,<js2>,..<js7>"); + +static int tgfx_2[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 }; +static int tgfx_nargs_2 __initdata = 0; +module_param_array_named(map2, tgfx_2, int, &tgfx_nargs_2, 0); +MODULE_PARM_DESC(map2, "Describes second set of devices"); + +static int tgfx_3[] __initdata = { -1, 0, 0, 0, 0, 0, 0, 0 }; +static int tgfx_nargs_3 __initdata = 0; +module_param_array_named(map3, tgfx_3, int, &tgfx_nargs_3, 0); +MODULE_PARM_DESC(map3, "Describes third set of devices"); + +__obsolete_setup("tgfx="); +__obsolete_setup("tgfx_2="); +__obsolete_setup("tgfx_3="); + +#define TGFX_REFRESH_TIME HZ/100 /* 10 ms */ + +#define TGFX_TRIGGER 0x08 +#define TGFX_UP 0x10 +#define TGFX_DOWN 0x20 +#define TGFX_LEFT 0x40 +#define TGFX_RIGHT 0x80 + +#define TGFX_THUMB 0x02 +#define TGFX_THUMB2 0x04 +#define TGFX_TOP 0x01 +#define TGFX_TOP2 0x08 + +static int tgfx_buttons[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2 }; +static char *tgfx_name = "TurboGraFX Multisystem joystick"; + +static struct tgfx { + struct pardevice *pd; + struct timer_list timer; + struct input_dev dev[7]; + char phys[7][32]; + int sticks; + int used; +} *tgfx_base[3]; + +/* + * tgfx_timer() reads and analyzes TurboGraFX joystick data. + */ + +static void tgfx_timer(unsigned long private) +{ + struct tgfx *tgfx = (void *) private; + struct input_dev *dev; + int data1, data2, i; + + for (i = 0; i < 7; i++) + if (tgfx->sticks & (1 << i)) { + + dev = tgfx->dev + i; + + parport_write_data(tgfx->pd->port, ~(1 << i)); + data1 = parport_read_status(tgfx->pd->port) ^ 0x7f; + data2 = parport_read_control(tgfx->pd->port) ^ 0x04; /* CAVEAT parport */ + + input_report_abs(dev, ABS_X, !!(data1 & TGFX_RIGHT) - !!(data1 & TGFX_LEFT)); + input_report_abs(dev, ABS_Y, !!(data1 & TGFX_DOWN ) - !!(data1 & TGFX_UP )); + + input_report_key(dev, BTN_TRIGGER, (data1 & TGFX_TRIGGER)); + input_report_key(dev, BTN_THUMB, (data2 & TGFX_THUMB )); + input_report_key(dev, BTN_THUMB2, (data2 & TGFX_THUMB2 )); + input_report_key(dev, BTN_TOP, (data2 & TGFX_TOP )); + input_report_key(dev, BTN_TOP2, (data2 & TGFX_TOP2 )); + + input_sync(dev); + } + + mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); +} + +static int tgfx_open(struct input_dev *dev) +{ + struct tgfx *tgfx = dev->private; + if (!tgfx->used++) { + parport_claim(tgfx->pd); + parport_write_control(tgfx->pd->port, 0x04); + mod_timer(&tgfx->timer, jiffies + TGFX_REFRESH_TIME); + } + return 0; +} + +static void tgfx_close(struct input_dev *dev) +{ + struct tgfx *tgfx = dev->private; + if (!--tgfx->used) { + del_timer(&tgfx->timer); + parport_write_control(tgfx->pd->port, 0x00); + parport_release(tgfx->pd); + } +} + +/* + * tgfx_probe() probes for tg gamepads. + */ + +static struct tgfx __init *tgfx_probe(int *config, int nargs) +{ + struct tgfx *tgfx; + struct parport *pp; + int i, j; + + if (config[0] < 0) + return NULL; + + if (nargs < 2) { + printk(KERN_ERR "turbografx.c: at least one joystick must be specified\n"); + return NULL; + } + + pp = parport_find_number(config[0]); + + if (!pp) { + printk(KERN_ERR "turbografx.c: no such parport\n"); + return NULL; + } + + if (!(tgfx = kmalloc(sizeof(struct tgfx), GFP_KERNEL))) { + parport_put_port(pp); + return NULL; + } + memset(tgfx, 0, sizeof(struct tgfx)); + + tgfx->pd = parport_register_device(pp, "turbografx", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); + + parport_put_port(pp); + + if (!tgfx->pd) { + printk(KERN_ERR "turbografx.c: parport busy already - lp.o loaded?\n"); + kfree(tgfx); + return NULL; + } + + init_timer(&tgfx->timer); + tgfx->timer.data = (long) tgfx; + tgfx->timer.function = tgfx_timer; + + tgfx->sticks = 0; + + for (i = 0; i < nargs - 1; i++) + if (config[i+1] > 0 && config[i+1] < 6) { + + tgfx->sticks |= (1 << i); + + tgfx->dev[i].private = tgfx; + tgfx->dev[i].open = tgfx_open; + tgfx->dev[i].close = tgfx_close; + + sprintf(tgfx->phys[i], "%s/input0", tgfx->pd->port->name); + + tgfx->dev[i].name = tgfx_name; + tgfx->dev[i].phys = tgfx->phys[i]; + tgfx->dev[i].id.bustype = BUS_PARPORT; + tgfx->dev[i].id.vendor = 0x0003; + tgfx->dev[i].id.product = config[i+1]; + tgfx->dev[i].id.version = 0x0100; + + tgfx->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); + tgfx->dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y); + + for (j = 0; j < config[i+1]; j++) + set_bit(tgfx_buttons[j], tgfx->dev[i].keybit); + + tgfx->dev[i].absmin[ABS_X] = -1; tgfx->dev[i].absmax[ABS_X] = 1; + tgfx->dev[i].absmin[ABS_Y] = -1; tgfx->dev[i].absmax[ABS_Y] = 1; + + input_register_device(tgfx->dev + i); + printk(KERN_INFO "input: %d-button Multisystem joystick on %s\n", + config[i+1], tgfx->pd->port->name); + } + + if (!tgfx->sticks) { + parport_unregister_device(tgfx->pd); + kfree(tgfx); + return NULL; + } + + return tgfx; +} + +static int __init tgfx_init(void) +{ + tgfx_base[0] = tgfx_probe(tgfx, tgfx_nargs); + tgfx_base[1] = tgfx_probe(tgfx_2, tgfx_nargs_2); + tgfx_base[2] = tgfx_probe(tgfx_3, tgfx_nargs_3); + + if (tgfx_base[0] || tgfx_base[1] || tgfx_base[2]) + return 0; + + return -ENODEV; +} + +static void __exit tgfx_exit(void) +{ + int i, j; + + for (i = 0; i < 3; i++) + if (tgfx_base[i]) { + for (j = 0; j < 7; j++) + if (tgfx_base[i]->sticks & (1 << j)) + input_unregister_device(tgfx_base[i]->dev + j); + parport_unregister_device(tgfx_base[i]->pd); + } +} + +module_init(tgfx_init); +module_exit(tgfx_exit); |
